factory unlock vs gpp carrier

Jun 15, 2017
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#1
please help me. i am planning to buy a secondhand iphone and am torn between buying iphone 5s (factory unlocked) and iphone 6 (gpp). I know that using gpp has a lot of risks like it can shutdown if you upgrade its ios. So which is better? And what are the pros and cons of using gpp?
 

Europa

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#2
please help me. i am planning to buy a secondhand iphone and am torn between buying iphone 5s (factory unlocked) and iphone 6 (gpp). I know that using gpp has a lot of risks like it can shutdown if you upgrade its ios. So which is better? And what are the pros and cons of using gpp?
There are no guarantees the GPP (SIM card unlock) will work or continue to work with updates. Definitely go with a factory unlocked iPhone. Verify that it's not iCloud locked or blacklisted prior to purchase.